Note that, in the DEUFRABASE, if you choose a road geometry with a dense ground (respectively, a porous ground), you will be able to select dense pavements only (respectively, porous pavements).
For each road pavement, the LA,max values have been measured at a reference point located in the road vicinity, 7.50 m from the right lane axis and 1.20 m above the road surface, according to the Standard Pass-By method (SPB method [EN-ISO 11819-1]). Two speeds (VRef) have been considered for the passenger cars (90 and 110 km/h), and one for the heavy trucks (80 km/h).
French and German road pavements
By default, the DEUFRABASE is proposed with many French and German pavements of different types. If you want to add other pavements directly in the DEUFRABASE, please contact us using the Contact form.
The mean road pavement LA,max spectrum have been obtained by averaging spectrum measured on several different roads with the same type of pavement, both in France and in Germany. For the French part, the mean spectrum have been obtained from the french road pavement database, maintained by the Cerema Est (Strasbourg laboratory)
Road pavements currently implemented in the DEUFRABASE
User road pavement data
Users can use their own road pavement data, for both the PC ('pc' in the filename) and the HT ('ht' in the filename), by uploading two files respectively, 'vnn_pc_MyOwnPavement.txt' (for PC) and 'vnn_ht_MyOwnPavement.txt' (for HT), with a given noise spectrum (see file template) at a given speed 'vnn' (for example 'v90' and 'v110' for 90 km/h and 110 km/h, respectively, for a passenger car; and 'v80' for a heavy truck).
For each file, users have to define the Lmax value (real value, without A-weighting) for each third octave band from 100 Hz to 4000 Hz.
Check the number of lines. Do not add an extra blank line after the last third-octave band.
Note that if you use your own pavement data, you must select a compatible geometry (for example, a 'porous' pavement with a 'porous' geometry).
surface: My Own Pavement
i When a file is uploaded to the server a test is carried out in order to verify the data. If a problem occurs, the file is not taken into account.